baber/WOPTO huggingface dataset:
Patent GB-1439836-A (GB)
Title: Apparatus for maintaining thread tension constant during the  feeding of thread from a thread supply via a thread delivery  mechanism to a thread take-up mechanism
IPC: B65H59/38
Filed: 1973-07-13
Abstract: 1439836 Yarn tensioner F M N SCHUSTER & CO 13 July 1973 [14 July 1972] 33416/ 73 Heading DID In a thread tensioner a loop of running yarn is formed by an air jet in a duct, and the movement of the loop apex due to tension changes is sensed by two contactless sensors spaced along the duct to control the speed of thread delivery or take-up mechanisms. An air jet in duct 20 creates a thread loop the position of whose apex 27 is sensed by photoelectric sensors 28, 29, to control the speed of wind-up motor 16. As the apex oscillates between positions which lie outside the sensors, the response of the sensors to the presence of thread switches on and off the output of circuit to produce a square-course voltage. If thread tension alters, the influence of the apex on both sensors is no longer the same and the change in the resulting square wave voltage is used to adjust the speed of motor 16. Further sensors 30, 31 may be used. The velocity of the overflow may be adjusted. The sensors may be mounted on a pivoted, oscillating arm (Figs. 4 and 5, not shown).
Patent GB-741347-A (GB)
Title: Improvements in or relating to terminal strips comprising a plurality of relatively-insulated contact members
IPC: H01H63/06
Filed: 1953-12-02
Abstract: 741,347. Electric selectors and connectors. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Dec. 2, 1953 [Dec. 5, 1952], No. 33488/53. Class 40 (4). [Also in Group XXII] A connecting device comprises a metal supporting strip 1 with a plurality of transverse grooves 2 in which metal wires 3 are positioned to project from either side of the strip 1, one or more filaments of flexible insulating material 4 such as nylon passing under successive wires, and the wires 3 and filaments 4 being secured to the metal strip by an insulating adhesive. As shown, the device forms part of a selector switch. The tapes 4 are returned over the wires 3 before the application of the adhesive and lie in longitudinal grooves 6, Fig. 2. The wires 3 after assembly as shown at A, Fig. 1, are flattened at 7 and 8, B, and then cut to the shapes shown at 9 and 10, C, to form the usual contacts and terminals. The invention may be applied to distributing strips in an exchange or connecting strips in electromagnetic relays.
Patent GB-282098-A (GB)
Title: Improvements in or relating to the maintenance of constant frequency and phase relationship in periodic processes
IPC: H04L7/00
Filed: 1927-12-10
Abstract: 282,098. Lorenz Akt.-Ges., C. Dec. 11, 1926, [Convention date]. Synchronous movements.-Relates to automatic systems for maintaining equality of speed between separately driven machines, and for maintaining constant frequency and phase-relationship of high-frequency alternating or oscillating currents, in particular for use in pictures telegraphy and in simultaneous wireless broadcasting. According to the invention two alternating currents one derived from the machine to be controlled and the other from a standard source, are superposed on each other with a suitable phase-difference and the resultant alternating current is used, after amplification by thermionic valves, to vary the effect of an eddy-current brake or the strength of an electric motor field. In regulating the frequency of valve transmitters correction may be effected by varying the tuning of the oscillation circuit or by varying the anode or grid voltage. Fig. 1 shows an arrangement for synchronizing a rotary telegraphic receiving apparatus 1 with a distant transmitter. A small alternator 3 coupled to the apparatus 1 feeds a transformer winding g associated with another winding 2 which receives alternating current from the transmitter by wired or wireless connection. The resultant current in the transformer secondary 10 amplified by a thermionic valve 11 magnetizes the coil of an eddy-current brake 13, which varies the retarding force in a direction to compensate for small changes in the speed of the apparatus 1. One or more thermionic valves acting as amplifiers or rectifiers may be added to the arrangement. Fig. 6 shows an arrangement for maintaining constant working of a high-frequency generator 20 driven by a motor 22. Alternating current from the machine 20 feeds a transformer winding 27, the associated winding 28 being fed by a source of standard frequency, e.g. a valve oscillator. The superposed currents in the secondary 26 act on the grid of a thermionic valve 29 controlling a Tirrill regulator 42 which controls an eddy-current brake 39 on the shaft of the driving motor. Field regulation may be used instead of the brake. For simultaneous wireless broadcasting, a number of transmitting stations are controlled in the above manner by waves from a central station.
Patent GB-1507200-A (GB)
Title: 7-aza-1-tetralones
IPC: C07C45/63
Filed: 1975-05-05
Abstract: 1507200 3-Alkoxy and cycloalkoxy-isoquinolin-8-ones G D SEARLE & CO 5 May 1975 [6 May 1974 22 Jan 1975] 33589/76 Divided out of 1507199 Heading C2C The invention comprises compounds (I), where R is C 1-7  alkyl or C 4-8  cycloalkyl and their preparation by reacting a compound (II) with a halide R-Hal. 2,3,5,6,7,8-Hexahydroisoquinoline 3,8-dione is made by reacting dihydroresorcinol with PCl 3 , heating the resulting 3-chloro-2- cyclohexen-1-one with the reaction product of cyanoacetamide with sodium hydride, cyclizing the formed α-cyano-3-oxo-cyclohex-1-en-1-acetamide by heating with dimethylformamide diethyl acetal and heating the resulting 2,3,5,6,7,8 - hexahydro - 3,8 - dioxoisoquinoline- 4-carbonitrile.
Patent GB-1510833-A (GB)
Title: Process for manufacturing an electret microphone
IPC: H04R19/01
Filed: 1975-08-12
Abstract: 1510833 Electret microphones TELEFONAKTIEBOLAGET L M ERICSSON 12 Aug 1975 [15 Aug 1974] 33607/75 Heading H4J [Also in Division H1] In an electret microphone wherein the movable electrode comprises PTFE electret layer 3 and polyester layer 2 bearing metallized layer 4, air gaps are provided between electret layer 3, fixed plate 1 and layer 2 by hot embossing a mesh pattern on each side of the electret layer before completion of polarization using a glass web.
Patent GB-406243-A (GB)
Title: Improvements in and relating to apparatus for making concrete pipes or tubes
IPC: B28B21/26
Filed: 1933-11-30
Abstract: 406,243. Moulding concrete pipes. BARR, J. F., Killineer House, Drogheda, Irish Free State. Nov. 30, 1933, No. 33608. Addition to 405,222. [Class 87 (ii).] In apparatus for making concrete pipes or tubes as described in the parent Specification, in which the pipes or tubes are constructed against the pressure of a hydraulic ram by a core provided with helical vanes or ribs which is rotated in a mould mounted on a table carried by the ram, the table 1 is rectangular and is fixed to the top of the ram, being slidable vertically on guides 8 on the framework. The mould 7 is carried by a bogie 6 provided with wheels 5 adapted to run on rails provided on the table. The cores for forming the body of the pipe or tube and the collar respectively are arranged above the table one behind the other, the mould being wheeled first beneath the bodyforming core and then beneath the collarforming core. Slidably mounted on the guides 8 at a position just above the top of the mould when the table is in its lowest position, is a guide frame 9 carrying a pair of guides 9a. On the upward movement of the mould 7, one of the guides 9a is engaged and pushed up by the upper end of the mould, which is thereby held steady during the construction of the pipe or tube. In order to feed concrete to the mould, the drive shaft of the body-forming core is hollow and is connected to the core through a skeleton framework. The drive shafts of the cores are provided at the upper ends with horizontal bevel wheels engaged by bevel wheels on the ends of a horizontal shaft driven from the motor through a chain and sprocket wheel. The ram may be operated pneumatically instead of hydraulically.
Patent GB-871961-A (GB)
Title: Device for coupling the sections of motors for subterranean work
IPC: F03B13/02
Filed: 1957-10-28
Abstract: 871,961. Shaft couplings. TIRASPOLSKY, W., and ROUVIERE, R. F. Oct. 28, 1957 [Oct. 31, 1956], No. 33618/57. Class 80 (2). In a drilling turbine for subterranean work, the motor or turbine hollow shaft sections are secured together by longitudinal tightening members anchored in the primary end member of the neighbouring rotor section, the end members having complementary coupling surfaces. A power section of a drilling turbine comprises a body 1 in which are located alternate stator parts 2 and intermediate members 3 clamped by end sleeves 5, 6. A rotor comprises a shaft 7 on which are stacked a bearing sleeve 8 rotor parts 9 and spacing members 10 clamped between end spigots 11, 12 which have male and female conical ends 13, 14 respectively. The next section of the turbine 7<SP>1</SP> has a complementary conical spigot member 15 which is secured to the member 11 for the transmission of torque by an axial tightener 17 screwed at 16 into the member 15, and stressed by a nut 18. To provide greater torque capacity the conical ends 13, 14 may be serrated. In a second embodiment, Fig. 4, the shaft 40 has flat ends which co-operate with end pieces 44, 45, the lower 45 of which has rigid therewith a tightener 46 extending through the shaft and held in tension with the end piece 44 by wedge means 47. In a modification a plurality of tighteners passes through the components of the turbine rotor.
Patent GB-620581-A (GB)
Title: A process for the removal of impurities of an organic nature from aqueous solutions of sugars
IPC: C13B20/14
Filed: 1945-12-12
Abstract: A synthetic resin gel suitable for use in removing impurities of an organic nature from sugar solutions (see Group VI) is obtained by simultaneous condensation of acid and basic resin-forming components with formaldehyde, e.g. by precipitation of a mixture of resorcinol and metaphenylene diamine with formaldehyde in aqueous medium.  The acid components preferably contain one or more of the groups -COOH, -OH (phenolic), -SO3H and -CH2SO3H and the basic groups contain one or more of -NH2, =NH (imino) and -NH-CH2- groups.  Specification 616,278, [Group VI], is referred to.ALSO:Impurities of an organic nature are removed from sugar solutions by treating them with water-insoluble synthetic resin gels which, after their manufacture, have not, or substantially not, been dried and which are characterized in that both one or more of the acid groups -COOH, -OH(phenolic), -SO3H and -CH2SO3H and one or more of the basic groups -NH2, =NH(imino) and -NH-CH2- are present in the same resin structure, or which consist of closely interwoven structures of synthetic resin gels with one or more of the said acid groups, and synthetic resin gels with one or more of the said basic groups.  The resin gels used may be obtained by simultaneous condensation of acid and basic resin-forming components (see Group IV(a)), the quantities of acid and basic components being preferably selected in such a way that when the resin gels are in contact with acid or with alkaline liquids, no, or practically no, change in volume occurs.  The removal of the impurities from the sugar solutions may be carried out in the presence of finely divided substances such as bleaching earth or activated carbon, and any protein substances are preferably removed by precipitation prior to treatment with the resin gel. Specification 616,278 is referred to.
Patent GB-1001454-A (GB)
Title: Improvements in or relating to the false-twisting of a running yarn
IPC: D02G1/06
Filed: 1962-09-04
Abstract: 1,001,454. False-twist spindles. ONDERZOEKINGSINSTITUUT RESEARCH N.V. Sept. 4, 1962 [Sept. 12, 1961], No. 33814/62. Heading D1D. In a method of false twisting a running yarn by causing the yarn to be slidably wrapped around a rotating member, the rotating member is axially supported by the ballooning yarn travelling from the member to a fixed, co-axially positioned thread guiding eyelet. In one embodiment (Fig. 1) the false twist "spindle" is a short circuited armature 3 in the form of a ring which is rotated by a rotating magnetic field set up by coils 2. The yarn is wrapped at least once around the ring in one of the two grooves 4 arranged on the underside of the ring. In another embodiment (Fig. 2) spindle 7 is radially supported by belt 11, and by two sets of wheels 12, 13 mounted on two bushes 14. The yarn passes through at least one of four passages 9 arranged in the flanged outer surface 8. The spindle may be inclined to the vertical, or may be horizontal. Alternatively the spindle may be rotated by having a plurality of blades or grooves onto which compressed air is directed. Reference has been directed to the Comptroller to Specification 920, 707.
Patent GB-655681-A (GB)
Title: Improvements in or relating to color television
IPC: H01J31/20
Filed: 1947-12-22
Abstract: 655,681. Cathode-ray tubes. DU MONT LABORATORIES, Inc., A. B. Dec. 22, 1947, No. 33826. Convention date, Dec. 26, 1946. [Class 39 (i)] A fluorescent screen for use in a receiving tube for colour television has at least three sets of surfaces 5, 6, 7 on one side of it, the surfaces of each set being substantially parallel to each other and being non- coplanar with the surfaces of the other sets, the surfaces of each set fluorescing with a different colour when struck by an electron beam. Preferably there are three sets of surfaces, as in the Figure, each at right angles to the others and each fluorescing with one primary colour, such as green, red and blue. The screen may be arranged in a cathode-ray tube with three electron guns, an electron gun being arranged to fire a beam of electrons at right angles to each set of surfaces. Preferably the surfaces are coated with a thin layer of aluminium so that electrons striking the surfaces at right angles will penetrate the aluminium, but electrons striking at an acute angle will not. The other side of the screen may be provided with lenses, each lens being the size of a group of three surfaces, one from each set.
Patent GB-1522530-A (GB)
Title: Foldable wheel chair
IPC: B62B11/00
Filed: 1976-08-13
Abstract: 1522530 Foldable wheel chairs YAESU REHABILI CO Ltd, ,13 Aug 1976 [21 Aug 1975] 33893/76 Heading B7B A wheel chair is so constructed that, when a flexible seat 30 is raised, the longitudinal and transverse dimensions of the chair are simultaneously reduced. At each side of the chair, a frame 10 comprises an upper member 11 secured to a vertical post 12, to which are pivoted front and rear lower members 14, 15, and two pairs of interpivoted diagonal braces 18<SP>1</SP>, 18<SP>11</SP> extend between the side frames and are journalled by universal joints 20 to the upper members 11 and respectively to the front and rear lower members. Thus, raising of the seat 30 causes the members 14, 15 to pivot downwardly and the braces 18<SP>1</SP>, 18<SP>11</SP> simultaneously move together to reduce the transverse chair dimension. Backrest supporting posts 51 slide in apertures in the members 11 and are held in a desired position by pins 53.
Patent GB-944487-A (GB)
Title: Improvements in or relating to tedders
IPC: A01D78/00
Filed: 1961-11-22
Abstract: The subject matter of this Specification is included in that of Specification 944,481 but the claims differ.  Specifications 944,482, 944,483, 944, 484, 944, 485 and 944,486 also are referred to.
Patent GB-212642-A (GB)
Title: Improvements in and relating to emulsifying apparatus
IPC: A23G3/02
Filed: 1922-12-14
Abstract: 212,642. Sonsthagen, A., Wood, J. L., and Keenok Co., Ltd. Dec. 14, 1922. Emulsions, making. -An emulsifying machine comprises a receptacle in which rotates a shaft having blades of opposite and different inclination whereby the material is given a progressive and reciprocating motion, and a return space or passage to permit the circulation of the material. The receptacle may be fed from a second receptacle fitted with a rotating shaft having wire or other beaters. The emulsifier receptacle 10 which may have a heating jacket, has a cylindrical bottom conforming to the path of the oppositely inclined blades 15, 15<a> of different pitch, the return passage consisting of the space at the top of the trough. The material is fed through a valve controlled pipe 9, from the second receptable 6 mounted above the first. The blades may have their ends bent at an angle to prevent radial movement of the material, or they may work inside a cylinder. The materials may be subjected to a mixing operation during their passage through the return space.
Patent GB-496163-A (GB)
Title: Improvements in fishing reels
IPC: A01K89/033
Filed: 1937-12-10
Abstract: 496,163. Fishing - reels. HARDY BROS. (ALNWICK), Ltd., and HARDY, L. R. Dec. 10, 1937, No. 34265. [Class 48] In a geared fishing-reel wherein the winding handle acts through a friction clutch serving also as a brake, one clutch member revolves with the handle and the other with the drum, and a plurality of compression springs are used concentric to the winding spindle. The gear wheel 7 is mounted on the spindle 6 and is engaged by a plate 14 sliding on and keyed to the spindle and provided with six pegs 15 with springs 17 engaging apertures 18 in a compression plate 16 engaged by the capstan nut. Ball bearings may be used between the capstan nut and plate 16. The handle is mounted on the squared part 6a of the spindle which may carry a ratchet wheel 10 engaged by pawls on the drum. Friction washers 11, 13 may be used between wheels 10, 7 and plate 14. Specification 486,135 is referred to.
Patent GB-805676-A (GB)
Title: Improvements in couplings for pipes and like members, including bottle closures
IPC: F16L23/10
Filed: 1956-11-12
Abstract: 805,676. Pipe joints. SMITH, D. Nov. 12, 1956 [Jan. 11, 1956], No. 34480/56. Class 99(1). [Also in Groups XVII and XXV] A clamping ring for flanged pipes, pipe fittings or bottle closures comprises a surrounding metal band 6 having lugs 7 which are curled inwards and contain a curled piece of metal 10 of higher coefficient of expansion to form a bimetallic element the inner free legs of which are contained in an indentation 8 in the band which restricts circumferential movement and acts as a stop for limiting tightening movement when the inner faces of the curled lugs press against pipe flanges 24, 25 with a force component coaxial with the coupling. The band can be formed in a power press, the lugs 7 then pressed into a U-shape, the inner metallic parts 10 inserted and finally the press shaping the bimetallic elements to their finished form. To strengthen the indentations 8, extensions 12 are formed towards the edges of the band which stiffen it at points opposite the middle of the lugs. To draw the band edges together an end 13 is folded over outwardly and spot welded so that a slot end 14 contains a bolt 15 to which it is permanently attached by a cross head 16. The other end 20 of the band is welded to a socket 21 which contains a T-head 23 of the bolt. Specification 781,676 is referred to.
Patent GB-1014923-A (GB)
Title: Improvements in or relating to electrical vibrators
IPC: H03H9/58
Filed: 1962-09-10
Abstract: 1,014,923. Tuning forks. TOKO RADIO COIL KENKYUSHO KABUSHIKI KAISHA. Sept. 10, 1962 [Sept. 8, 1961], No. 34549/62. Heading G5J. [Also in Division H2] A tuning fork comprises a pair of flexure-type piezoelectric vibrators (see Division H2), secured to a base D. Each vibrator consists of two elements A, B, separated by spacers to prevent friction between them.
Patent GB-301048-A (GB)
Title: Improvements in laminated springs for vehicles
IPC: F16F1/20
Filed: 1929-02-28
Abstract: 301,048. Victorero, A., Victorero, A., and Victorero, A., (trading as Victorero y Hermanos, A.). Nov. 23, 1928. [A Specification was laid open to inspection under Sect. 91 of the Acts, Nov. 24, 1928]. Laininated springs are provided with interleaves 2 of non- oxidisable steel inserted between the ordinary leaves 1 to avoid the necessity for lubrication.
Patent GB-619113-A (GB)
Title: Wrapping machine and method of wrapping
IPC: B65B9/02
Filed: 1946-11-21
Abstract: 619,113. Wrapping-up. WINGFOOT CORPORATION. Nov. 21, 1946, No. 34564. Convention date April 20. [Class 94 (i)] A method of wrapping articles comprises placing the articles to be wrapped between layers of heated heat-sealable material at a temperature to effect sealing of the layers and pressing the material about the articles between two opposed soft material surfaces arranged close to each other for pressing engagement with the articles throughout substantial areas said surfaces being comformable to irregularities of articles placed therebetween. Each of the said soft material surfaces may be made discontinuous by dividing it along lines extending at a substantial angle to the operating surfaces. In the form shown, a wrapping machine includes a pair of belts having opposed pressing areas of substantial size, the surfaces of the belts being of radially extending layers of sponge rubber. Said belts are carried by chains 10 and 16, engaging sprockets 8, 9 and 14, 15 the adjacent lengths travelling in the same direction. The sprocket 9 on the shaft 7 is driven by the sprocket 11 and chain 5 from the gear reduction mechanism 4 and motor 3 imparting motion to the sprocket 8 on shaft 6 carrying sprocket 20 which drives a chain 17 and sprocket 21 on shaft 13 carrying sprocket 14 whence the upper belt is moved. Overlapping layers 35 and 36 of heatsealable wrapping material, e.g., rubber hydrochloride film, is fed between said belts in such a manner as to cause the layers to be somewhat divergent prior to being fed between said belts to permit the consecutive insertion of articles 45 therebetween. The wrapping material is heated by rollers 37, 38 rotated by a chain and sprocket from the shafts 13 and 6, and driven at a surface speed slightly greater than the surface speed of the belts at the point where they come into contact. The shafts 13 and 6 have friction clutches 43, a small amount of drag on the rollers 37 and 38 causing the clutches to slip. Other friction means may however be provided. The means for supporting the belt comprises a series of interconnected saddle members composed of two lines of flared plates 27, oppositely joined by rods which may be rotated at the base. Adjacent plates 27 overlap to form a continuous lateral support for said belt and are supported by pins mounted on projections carried by alternate links in the chains 10 and 16. Guides 29 for the lower chain and 30 for the upper chain prevent any sagging of the belt. Rollers 32 press the belts against the pins 28 in the non-working portions of travel.
Patent GB-406446-A (GB)
Title: Improvements relating to stewing and frying pans
IPC: A47J45/10
Filed: 1932-12-06
Abstract: 406,446. Cooking-utensils. KLASS, G., 105, Bolsover Street, London. Dec. 6, 1932, No. 34580. [Classes 28 (i) and 28 (ii).] A detachable stirrer for frying, stewing, and like pans, serving also for removing the cooked contents, consists of a slide shaped to fit the pan and having one end formed with means such as a notch b to engage with a headed pin, tubular rivet &c. upstanding from the centre thereof, the other end of the slide being fitted with a handle e. The elbow or bend of the slide is formed with a rib or embossment c to assist the stirring action.
Patent GB-521778-A (GB)
Title: Improvements in piston rings
IPC: F16J9/06
Filed: 1938-11-28
Abstract: 521,778. Pistons. JONES, F. J. S. Nov. 28, 1938, No. 34601. [Class 122 (i)] A piston ring is formed of a number of ring elements 1, 2, 3 with opposed inclined surfaces shaped so that the surface of 1 affords a tight fit with the cylinder, the opposed inclined surfaces co-operating to produce both a radial and axial expansion of the ring assembly. The rings are formed with slits which are relatively staggered, and an expansible ring such as a polygonal ring 5, or a ring formed with laterally extending spring tongues may be arranged between the ring assembly and the piston groove.